The Switch on our site is the 2nd version of the product. We added more 50% more solar power and made the bag bigger (and we think better looking). The battery is the same on the previous version. The one downside is that there is no 6V / 12Volt switch on the newer version which makes it harder to charger DSLR cameras. If that is important to you, the older version of the Switch could be a better fit.